NO INSTALLATION REQUIRED: The padlock key box with detachable shackle allows you to easily hang it anywhere, including doorknob, fence, railing, pipe. No screwing or drilling required. HIGH SECURITY: Heavy-duty zinc alloy and steel provide extra resistance to cutting, hammering and sawing. And it is non-corrosive and weather resistant. Resettable 4-digit combination allows you to set your own code with 10000 unique options. Confidently share keys to loved ones and loved ones and never worry about getting locked out. EASY OPERATION: Just four steps to set the 4-digit combination as many times as needed. Please note that NEVER forget your password, or there is no way to use or reset the key safe. CAPACITY: The door key box with shackle comes with ample space internal that can hold up to 5 keys. [NOTE] As the upper interior is occupied by the locking mechanism itself, only items with a thickness of less than 0.5cm can pass through this part. Long, thick items like remote control car keys will not fit. BUY WITH CONFIDENCE: Rubber coated hook and back of key storage box to prevent scratches; sliding shutter door to hide and protect the dials from dust, rain, snow and ice; environmental protection paint adds corrosion and rust resistance. The padlock key fob is covered by a one-year warranty. Buy with confidence!